Ключевые слова: architecture, background, canalization, cap, castings, causeway, circle, city, collector, commutator inspection hole, cover, design, drain, drainage, drainage system, element, founding, grunge, hatch, hatch cover, hatchway, infrastructure, injection molding, luke, manhole, metal, moulding, old, pattern, pave, pavement, paving, retro, road, roadway, round, sewage, sewer, sewerage, sidewalk, stone, street, sump, surface, texture, tiles, top, trapdoor, underground duct, urban,